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POjs class - first ajax object, can't get the result
 

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  1. POjs class - first ajax object, can't get the result
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    <p>this is my first class in js and I need help for get the rigth result</p> <pre><code>function ajaxObject (url, data, type) { this.url = url; this.data = 'data='+JSON.stringify(data) || null; this.type = type ? type : 'json'; this.result = null; var self = this; this.create = function () { //se il browser ? firefox if (window.XMLHttpRequest) { //istanzio un nuovo oggetto XMLHttpRequest this.oHttp = new XMLHttpRequest(); if (this.oHttp.overrideMimeType) { this.oHttp.overrideMimeType('text/xml'); } //se il browser ? IE } else if (window.ActiveXObject) { try { this.oHttp = new ActiveXObject("Msxml2.XMLHTTP"); } catch (e) { try { this.oHttp = new ActiveXObject("Microsoft.XMLHTTP"); } catch (e) { } } } }; this.process = function () { if (this.oHttp) { this.oHttp.open("POST", this.url, true); this.oHttp.onreadystatechange = this.manage; if (this.oHttp.overrideMimeType) { this.oHttp.overrideMimeType("application/json"); } this.oHttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded"); this.oHttp.setRequestHeader("Content-length", this.data.length); this.oHttp.send(this.data); } }; this.manage = function () { // alert(self.oHttp.readyState + ' - ' + self.oHttp.responseText); if (this.readyState === 4 &amp;&amp; this.status === 200) { // here this.responseText is correctly populated self.result = this.responseText; } else { self.requestFailed('message', this); return; } }; this.getResult = function () { switch (this.type) { case 'text': return this.result; break; case 'json': return $.parseJSON(this.result); break; } }; this.requestFailed = function (id, request) { if (document.getElementById) { sys.clearContent(id); document.getElementById(id).innerHTML = 'The XMLHttpRequest failed, STATUS: ' + request.status; } }; </code></pre> <p>}</p> <p>I try getting the result in this way:</p> <pre><code>var ao = new ajaxObject('output.php', {mutator: "orders", get: "orders"}); ao.create(); ao.process(); var r = ao.getResult(); alert(r); </code></pre> <p>but I can't get the result I expected.. all the server side works perfectly but my result variable is always "null".. I think there's something I miss, if somebody can help me please :)</p>
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    1. COThe first __A__ in __AJAX__ is _asynchronous_. You are alerting `r` before it's before `ao.getResult()` has returned anything.
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